Apple CEO Tim Cook has taken the top spot on a Glassdoor list of the 25 most highly-rated CEOs. The site records ratings from anonymous workers, who in this case judged their CEOs regarding a 12-month period ending on March 15th. Over 280,000 people participated; each rating was based on a five-point scale, from "strongly disapprove" up to "strongly approve." Cook won with an overall score of 97 percent.